passwordgenerator

#! /usr/bin/env bash

# hashapass.com method for generating passwords
# based on the script by Simon Elmir at http://hashapass.com/en/cmd.html

export IFS="" #read will now preserve whitespace
read -rp "parameter: " PARAMETER
read -rsp "password: " PASSWORD
echo
read -n 2 -rp "how many characters: " LENGTH
echo

echo -n "$PARAMETER" \
| openssl dgst -sha1 -binary -hmac "$PASSWORD" \
| openssl enc -base64 \
| cut -c 1-${LENGTH:-10}